Electrical Conductivity in the KDP, ADP, and K1-x(NH4)xH2PO4 Crystals

Impedance Spectroscopy was performed to examine the electrical conductivity on KH2PO4 KDP, (NH4)H2PO4 ADP and K1-x(NH4)xH2PO4 (x = 0.076, 0.118, 0.357, 0.857, 0.942) crystals with increasing temperature. They were grown by solvent evaporation method. Zview simulation software was used to theoretically fit electrical conductivity results as a function of frequency (1-106 Hz) and temperature (20-160 ºC) with equivalent circuits. These dielectric-type materials become ionic conductors upon heating. Proton jumps in hydrogen bonds, heavier ions migration (K+ and NH4+), and rotation and reorientati...